Hello,TI's engineering
I have a question about 1D-FFT.I use AWR1843 and develop MRR demo.I want to know when the 1D-FFT takes place?Each chirp's idle time or next whole chirp time?
I remember AWR1642 SRR demo's 1D-FFT is take place in next whole chirp time，I wonder if 1843 was the same？
Thanks a lot
Bryant
Hello Bryant,
This is irrespective of the device and the demo used. Range FFT (1D FFT) is performed on each chirp data. And a chirp consists of both active and idle time. Below is the snippet to help you understand this better. Here N is the number of chirps transmitted. You can understand this in the sense that each chirp data is stored as rows of the matrix and range FFT (1D FFT) is performed on each row.
Hope you understand the explanation.
Regards,
Ishita
